Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!

Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.

So I have the most random issue going on with my motor. It's a ej20g top end with an 04/05 STi shortblock, 550cc inj, and power fc.

The car is stalling after driving around a bit after warm up. So starts up great and idles great. Drive around but during that first 10 min when I go into neutral coming up to a stop light the car will just die when I take it out of gear. Only happens during first 10-15 min of driving. Smells like lots of fuel after starting right back up.

Car pulls amazing and drives totally normal after first 10-15 min and doesn't do the stalling if I were to go park somewhere run errands and then start it back up. Basically only in the morning or after not driving for a long time. Could it just be my ecu map?

I have noticed that totally randomly sometimes the idle sitting will hunt from normal (850) down to around 3-400 up and down, up and down and eventually go back to sitting at 850.